NO TOIL manufactures the world's best 2-stage foam air filters. Using only the best flame-laminated dual-layer foam bonded with the highest quality glue they hand make each foam filter to stand up to the roughest and toughest riding or terrain. NO TOIL filters can be used with NO TOIL biodegradable clean in water cleaner providing the best air filtration system in the world. Fits: Kawasaki D TRACKER 125 2011 KLX140 Small Wheel 2008-2020 KLX140G 2017 KLX140L Big Wheel 2008-2020 KLX140R Small Wheel 2021-2022 KLX140RL Big Wheel 2021-2022